OK, so I've learned the F75, (LTD, SE) are chatty. Where do you draw the line between a hot setting and excessive chat? Does it depend on your personal preference for how quiet you want your machine to run? Is a quiet F75 not working up to it's potential? How noisy should the F75 be in your opinion? Thanks for your consideration. HH. Matt
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Where do you draw the line?
- Thread starter matthias
- Start date
To me it depends on where I'm hunting.
First:
If the area has a very rapid soil sink rate then I'll run the machine a little hot. If the ground is hard and a very slow sink rate tame settings work just as good.
Second:
If EMI is a problem then I'll start by switching frequencies first then I will start out with a disc of 6 and drop sens until it just goes quiet, then turn it up a small amount.
First:
If the area has a very rapid soil sink rate then I'll run the machine a little hot. If the ground is hard and a very slow sink rate tame settings work just as good.
Second:
If EMI is a problem then I'll start by switching frequencies first then I will start out with a disc of 6 and drop sens until it just goes quiet, then turn it up a small amount.
For me it depends partly on the individual hunt on what is excessive chatter ... and on my frame of mind.
Two hunts that were completely different settings that come to mind:
Yesterday I got out for about two hours to hunt a soccer field that has a lot of underground wires, overhead lights and power drops at various places. Also a high tension line skirting a corner and a fair amount of can slaw and aluminum foil in the ground. Started off at discrimination of zero. I mostly quieted down from the power lines at around 55; but still more ground chatter than I was comfortable with, discrimination up to 10 got it pretty quiet but I was still getting pin head size pieces of aluminum in the first inch of dirt that the detector said were 4 to 5 inches deep. Set discrimination at 12 and dropped sensitivity down to about 40 and ran pretty quiet. The detector was now ignoring most of the tiny aluminum foil scraps. Got 26 tabs, 12 of them the old beaver tail pull tabs, and $3.87 in clad. Couple of the pull tabs were down between 7 and 8 inches and had very consistent ID numbers. No jewelry yesterday. Set like I had it, I think, except for real thin chains and very small charms, I would have gotten the jewelry if the coil went over it.
Last spring, was hunting along side a V3. We were at a farm. Quiet area as far as interference was concerned. Had a fair amount of iron and aluminum pieces in the ground. I could run sensitivity at 90 with 0 disc, but after a while got tired of the non-repeatable zips so went to all metal and sensitivity at 95 and found that more relaxing for that hunt site. I suggested all metal to my friend and he said no way ... too much noise. So, a definite personal preference there.
Can't say if I am getting the most out of the LTD or not. I set it where I am comfortable and have found that, for a given amount of hunt time at places I have hunted frequently, I pull more good targets out than I do with my other detectors. I was surprised yesterday with the high beaver tail tab count at a field I've hit very hard with other detectors. Noticed that a lot of the tabs were partially masked and would hit hard from one direction and were iffy from another, or were found on edge in the ground. I'm always hoping that the next tab range target is gold!
Cheers,
tvr
Two hunts that were completely different settings that come to mind:
Yesterday I got out for about two hours to hunt a soccer field that has a lot of underground wires, overhead lights and power drops at various places. Also a high tension line skirting a corner and a fair amount of can slaw and aluminum foil in the ground. Started off at discrimination of zero. I mostly quieted down from the power lines at around 55; but still more ground chatter than I was comfortable with, discrimination up to 10 got it pretty quiet but I was still getting pin head size pieces of aluminum in the first inch of dirt that the detector said were 4 to 5 inches deep. Set discrimination at 12 and dropped sensitivity down to about 40 and ran pretty quiet. The detector was now ignoring most of the tiny aluminum foil scraps. Got 26 tabs, 12 of them the old beaver tail pull tabs, and $3.87 in clad. Couple of the pull tabs were down between 7 and 8 inches and had very consistent ID numbers. No jewelry yesterday. Set like I had it, I think, except for real thin chains and very small charms, I would have gotten the jewelry if the coil went over it.
Last spring, was hunting along side a V3. We were at a farm. Quiet area as far as interference was concerned. Had a fair amount of iron and aluminum pieces in the ground. I could run sensitivity at 90 with 0 disc, but after a while got tired of the non-repeatable zips so went to all metal and sensitivity at 95 and found that more relaxing for that hunt site. I suggested all metal to my friend and he said no way ... too much noise. So, a definite personal preference there.
Can't say if I am getting the most out of the LTD or not. I set it where I am comfortable and have found that, for a given amount of hunt time at places I have hunted frequently, I pull more good targets out than I do with my other detectors. I was surprised yesterday with the high beaver tail tab count at a field I've hit very hard with other detectors. Noticed that a lot of the tabs were partially masked and would hit hard from one direction and were iffy from another, or were found on edge in the ground. I'm always hoping that the next tab range target is gold!
Cheers,
tvr
Hey Matt, I feel your pain...........well, not really pain since we are using such a sensitive detector...LOL!! I have played with this conundrum since I got the LTD in January this year, I don't think I have THE answer yet. As TVR said, I will play with the disc and sensitivity at each site if necessary to find some sort of balance. I try to keep the disc at 6 or lower and bring the sensitivity down to an acceptable level. I like to have mine set so that I get a little snap crackle and pop when I lay the machine down to dig but it settles down when I pick it back up to swing. I think EMI is the real key to how hot I can run in my area of PA, I don't think EMI is the same from site to site or even at the same site on different days.
I do know that I have hunted one site that is loaded with iron with the sensitivity as low as 30 and still dug a wheatie from 6". Dropping the sensitivity that low I was able to keep the disc at 5 or 6 and eliminate the iron falsing almost completely.
Keep playin' with her..............she will pay you for the effort!!
HH
Dave
I do know that I have hunted one site that is loaded with iron with the sensitivity as low as 30 and still dug a wheatie from 6". Dropping the sensitivity that low I was able to keep the disc at 5 or 6 and eliminate the iron falsing almost completely.
Keep playin' with her..............she will pay you for the effort!!
HH
Dave
Lower your sens and try detecting. You will be amazed at the 6, 7 inch finds you will make with a quiet F75..some even deeper. To much noise and ground return can actually hurt your finds ratio. I run at 40 sens some places, and even after doing this several times, am amazed at what I find..The T2 is the same way ..
boxofchocolates
New member
I agree with Elton.....I have run the ltd all kinds of ways.....with severe emi lower sens. way down and it will still find the goodies.....hh.......Dan
Maybe I have gotten used to the chatter, or I am simply brain dead, (probably the latter) but I like hearing everything in the ground and usually in multi tones. 0 disc. (except in nail infested sites, then 6 disc. and 1 tone) and sen. around 90 and up is my normal setup. I will, however, when re-hunting spots lower the sen. some to see if the target chatter masked something or when I"m in a part of the country that has fairly mineralized ground. Of course, chatter from electrical interference is a whole other ballgame. I think you draw the line when it becomes uncomfortable for you. HH jim tn
boxofchocolates
New member
Yep Jim....draw the line where you gotta.....I've learned to live with the chatter also but I have the option of toning it down.....hh.......Dan
shooter said:Are you Guys calling the EMI right, thats Elec or Freq Interference, You sure you don't mean EEMI "E" Environmental, Ground chatter or noise caused by high SEN to Minerals, because they are diff. and might confuse some people.
What I'll refer to as EMI (Electro-Magnetic Interference) is what I get while holding the coil still in the air. I normally set up to reduce or eliminate that chatter with the coil about 4 to 5 inches above the ground, but pointed towards the ground, and stationary. As the coil nears the ground and the detector is reading the ground more, it gets quieter. When I set the detector down to dig, with the coil not aimed at the ground, it may be fairly quiet or it may get so noisy that I flip the headphones off to dig, it depends on the location.
The ground chatter is what I get when the coil is in motion, some of it not repeatable, some repeats. I'll dig some of the repeatable zips and if the first 5 or so all turn up as very tiny pieces of shallow aluminum, I adjust to not get the zips when I put the micro piece of aluminum back on the ground. May give away the ability to find very small chains, but that is the price I choose to pay for a more relaxing hunt.
tvr
boxofchocolates
New member
I remember a few months back running AM getting a clad quarter at about 10 inches......high sens. it was running smooth the confid. indicator lit up several bars also......hh.....DAN
boxofchocolates
New member
Tones....I have tried them all....from 1 to 4h, delta pitch a little, it's your shoice......the book says 4h on older sites if I remember right ,look and listen to your detector.....I to would like to be very good with dp it is telling you a lot......hh.......Dan
Byron (TX)
Member
I've been using the regular F75 for about 1 1/2 years hunting every weekend, usually hunting in urban areas where EMI is common. Chatter has been a big problem with the most stable settings with sensitivity around 40 to 50 in DE mode using 4H tone at the trashy sites, or 2F at the older sites with light trash. Works OK, but seemed to be a waste of half the sensitivity, and was not find small targets (dimes, pennies, jewlery, buttons) deeper than 6 inches. 3 weeks ago, what the heck I reread the manual, did some experiminting with frequency shifting and the DE and PF modes, and high sensitivity. Wow what a difference! See the manual FREQUENCY SHIFTING (original F75 page 23). Same should work for the F75 LTD.
With lots of EMI, Ground balance as normal with sensity high and disc low enough to knock out small iron. Put in either PF or DE mode, then change to F1 frequency (hold the MENU button down, push the trigger forward to toggle down from F4 to F1. It should be very quite at 60 sensitivity, I cranked the sesitivity to 80 to 85 with a hint of occasional ground chatter. I've tried these settings at 5 different demo sites with the stock coil and now getting it to run stable in PF mode, disc at 16, in both 4H, 2F, and 1F tones.
I went back to 2 heavlily hunted (but very productive!) school demolition sites. Both have lots of EMI, and iron and modern trash. We've had club hunts at both sites too with a variety of detectors. I've been over this one scraped parking lot area throroughly at least 10 times with both the F75 (stock 11" DD and 6" eliptical concentric) and and Fisher 1236 8" coil, finding lots of good finds.
The last trip with the new settings, pulled 4 more wheat pennies and 2 1940's nickels, and several small smashed pencil eraser tops out of that junky area.
At the other school demo site which I've hunted at least 50 times over many years, last Friday I got 2 silver dimes (1944 & 1951) both about 6 inch deep, and 4 wheat pennies 3 to 5 inches deep. Was able to ID these with no problems, and little chatter. I call this former school site the wheat penny grave yard.
Going to start try JE mode again with the F1 frequency and lowering the disc to 6 and try it at the Tot lots going for jewelry.
Hope this helps.
With lots of EMI, Ground balance as normal with sensity high and disc low enough to knock out small iron. Put in either PF or DE mode, then change to F1 frequency (hold the MENU button down, push the trigger forward to toggle down from F4 to F1. It should be very quite at 60 sensitivity, I cranked the sesitivity to 80 to 85 with a hint of occasional ground chatter. I've tried these settings at 5 different demo sites with the stock coil and now getting it to run stable in PF mode, disc at 16, in both 4H, 2F, and 1F tones.
I went back to 2 heavlily hunted (but very productive!) school demolition sites. Both have lots of EMI, and iron and modern trash. We've had club hunts at both sites too with a variety of detectors. I've been over this one scraped parking lot area throroughly at least 10 times with both the F75 (stock 11" DD and 6" eliptical concentric) and and Fisher 1236 8" coil, finding lots of good finds.
The last trip with the new settings, pulled 4 more wheat pennies and 2 1940's nickels, and several small smashed pencil eraser tops out of that junky area.
At the other school demo site which I've hunted at least 50 times over many years, last Friday I got 2 silver dimes (1944 & 1951) both about 6 inch deep, and 4 wheat pennies 3 to 5 inches deep. Was able to ID these with no problems, and little chatter. I call this former school site the wheat penny grave yard.
Going to start try JE mode again with the F1 frequency and lowering the disc to 6 and try it at the Tot lots going for jewelry.
Hope this helps.